Xtrons PB7839BP Hal9K PX5 Strange wake up behavior - MTCD Android Head Units General

My Xtrons system running Hal9K 3.2.1 with MCU version MTCE_GS_V3.01_2 is reacting very strange during wake up.
Most of the time it all goes wel. As soon as I turn my car key system wakes up within seconds and runs normally. Even after days of not using my car.
On the other hand, sometimes, system starts up, but now showing the Android and Car logo. This means system did shutdown instead of go to sleep when leaving the car.
But since a couple of weeks I am having a new issue.
As soon as turn the key, all the lights on head unit go on, but screen does not light up.
Pressing the left button on the unit does not do anything.
Only thing that works is pressing the reset button. This morning , even pressing the reset button did not wake up the unit.
After several attempts , reset and power button, finally system woke up and run normally.
Wonder what this problem could be?
Why does the unit one day wake up fine, an other it restarts ? And what could cause the problem that lately i need to use the reset button?

Hi,
I am experiencing a similar issue. As soon as it gets around 0°C the unit does a full reboot. I guess it has something to do with the power supply circuit. I am also running the Hal9k ROM but on a Witson device with a different MCU version.

Related

[Q] Screen not starting up for power button

Hi,
I started to get a weird problem since last week. I've had this phone for about 3 months now and never had any problem like this.
It all started one morning when I wanted to stop phone alarm. The alarm was going off but the screen was black. I pressed the power button to wake up, but it was still black. After couple of times pressing the power button the screen came up. First it was not that often but the situation started to get worse. It came to that I can sometimes cannot turn it on for a long period of time. I need to keep pressing power button, volume buttons and eventually it will come up.
This is what I've found so far:
1) When the power button is pressed, although the screen doesn't start up, I can see the three buttons at the bottom lighting up. So it is not a problem of the power button.
2) When the power button is pressed, although the screen doesn't power up, the screen seems responsive. I can feel the vibrations when I tap (I have a startup password)
3) When the phone is connected to a power supply, screen always starts up without a problem.
4) Screen will start up more frequently when the batter power is high.
It seems as though there is a connection between batters power and the screen not starting up. But then again, once the screen comes up (after not starting up), then it works fine, until I turn the screen off.
Has anybody experienced anything like this before?
I did a factory reset thinking it might be some application I installed but it didnt help.
I had to send this phone once to repair the speaker and cost more than $80 just for courier. I don't want to spend another to get this fixed.
Thanks.
I have this problem or a problem very close to this. I have a HTC One X (international version). I'm running the latest version and updates and the problem has existed for at least the last two updates.
Android Version 4.1.1
HTC Sense version 4+
Software number 3.18.401.1
I have the screen lock pattern turned on.
Sometimes when I hit the power button, the phone does not turn on and so I press it again and only after a third press does the phone turn on. I then unlock the phone and use as normal. So, several times per day I have to press the power button three times before the phone turns on. But other times I press the power button once and it turns on straight away. I've just turned the pattern unlock off to see if this makes any difference. I'll start to record the exact details of when I experience this and see if we can work out a common cause.
Hopefully if enough people report this problem then they can send out an update to fix this problem.
exazonk said:
I have this problem or a problem very close to this. I have a HTC One X (international version). I'm running the latest version and updates and the problem has existed for at least the last two updates.
Android Version 4.1.1
HTC Sense version 4+
Software number 3.18.401.1
I have the screen lock pattern turned on.
Sometimes when I hit the power button, the phone does not turn on and so I press it again and only after a third press does the phone turn on. I then unlock the phone and use as normal. So, several times per day I have to press the power button three times before the phone turns on. But other times I press the power button once and it turns on straight away. I've just turned the pattern unlock off to see if this makes any difference. I'll start to record the exact details of when I experience this and see if we can work out a common cause.
Hopefully if enough people report this problem then they can send out an update to fix this problem.
Click to expand...
Click to collapse
I'm pretty sure this is a hardware issue. I bought mine from Expansys and sent it back to them for repair. It's been more than a month and they say they're still reparing it.
In my case it was impossible for me to start the screen up with power button no matter how much I pressed it. The only thing that worked for me was to press the back of the phone just below the camera. So it seems like a hardware issue. But on the other hand, at times when I can't get the screen turned on no matter what I do, I'd turn the phone off and start again and the thing would start up like nothing happened. So while I'm pretty sure it is a HW issue, I'm not sure how a power restart makes it work.
For me I don't think that this is a hardware problem as it only started happening once I did the big upgrade from 4.0 to 4.1 and then it follows a specific pattern. That is three power button presses will always turn it on. Less frequently I also get a problem where the power button turns on the three lights on the soft buttons but the screen remains black. I then hit the power button to turn it off, and again to turn it on and the phone is back to normal again.
Is yours an international version? I bought mine an international version and had it shipped to Australia.
solved?
Hi - did anyone ever solve this? This is happening to me with my HTC desire X after having had the screen repaired, so I think it is hardware related, but the shop doesn't know how to fix it! My screen also does not turn back on when I want to end a phone call and pull the phone away from my face anymore. These problems seem related as they started at the same time. I would be grateful for help!

SM-T320 no display/response, then works fine later

Hi,
I have a SM-320 running CM13. I have had this problem in two different nightly builds so far. I had the problem when on 12/30 build and now on 02/08 build. I have moved to CM13 since mid December. Did not have this issue on stock ROM.
Wanted to know if this is a Hardware issue or ROM Issue.
What happened:
The Tab was connected for charging overnight. When I try waking it with home button press or power button press, no response. The display is dark, the back and task key lights dont light up. Its looks like the Tab is powered down. When I Press the power button to start, it doesnt work.
I connect it back to power and keep it charging for some time and then try the home+vol up+power press for 1-2 mins, the tab powers up to TWRP. Now I can boot back to system. When I check the battery, its 90%+ charged.
I want to know if this is a symptom of hardware failure or something to do with the ROM. I am in India and the service center here dont service this model.
Cheers

MTCB-MD

Hi all! I am a owner of not well known MTCB-MD and have a few issues with it. Unit was updated to Malaysk rom for RK3066 android 4.4.4 and mcu is updated from MTCB-MD-1.83V to MTCB-MD-2.67V.
First problem is that power buton is not working. Cannot turn it off (it turns on and off via car key), and can´t make selection in recovery (reboot, restore, update, factory reset...). When MTC is on and I push power button it acts like HOME button (and I tried with all launchers).
Second thing is that 3 keys on the right are not working at all, and buttons on the left are remaped without any sense, luckly disc eject is displayed on screen, it is only way to eject CD/DVD.
Third thing is about Wi-Fi. Sometimes it turns on and immediately connects to network, sometimes it is stucked on Turning on Wi-Fi, sometimes it drops connection with phone which is 20cm away from unit.
Any idea how to roll back to original android version and where to find mcu version 1.83? And how to even upgrade/downgrade it when i can´t select any option in Recovery mod???
THANKS IN ADVANCE FOR YOUR RESPONSE!
blackwood91 said:
Hi all! I am a owner of not well known MTCB-MD and have a few issues with it. Unit was updated to Malaysk rom for RK3066 android 4.4.4 and mcu is updated from MTCB-MD-1.83V to MTCB-MD-2.67V.
First problem is that power buton is not working. Cannot turn it off (it turns on and off via car key), and can´t make selection in recovery (reboot, restore, update, factory reset...). When MTC is on and I push power button it acts like HOME button (and I tried with all launchers).
Second thing is that 3 keys on the right are not working at all, and buttons on the left are remaped without any sense, luckly disc eject is displayed on screen, it is only way to eject CD/DVD.
Third thing is about Wi-Fi. Sometimes it turns on and immediately connects to network, sometimes it is stucked on Turning on Wi-Fi, sometimes it drops connection with phone which is 20cm away from unit.
Any idea how to roll back to original android version and where to find mcu version 1.83? And how to even upgrade/downgrade it when i can´t select any option in Recovery mod???
THANKS IN ADVANCE FOR YOUR RESPONSE!
Click to expand...
Click to collapse
In the settings/factory settings/ there is an option for button layout. Change it to what works with your setup.
Contact your seller or manufacturer for files.
I have already tried all button layout options but nothing changes.
UPDATE: This morning new problem came out. MCU starts when I start engine, display logo, boot to homescreen, and after few seconds starts again displaying VW logo and it´s stuck on it...
Would it help to connect it to laptop via USB-A/USB-A cable and reinstall software/firmware with RK software?

What turns on a head unit ?

I have a 1 yr old LM px5 with boot issues.
I used to have on auto sleep but the damn thing would never wake up. Even pressing the on off button.
Now I have it on sleep after 1/2 or so which was a little better, and reverse cam worked if I have to re-start.
Once on it works and runs fine and has never turned itself off, so I dont suspect any lose power wires.
However I have briefly had issues with my canbus due to a faulty alarm unit. Since repaired but ever since steering controls have sometimes been erratic . That I can live with but its the not turning on thats the problem.
To me it seems like its (sometimes) not getting the 'turn on' command.
Can anyone advise please, because this unit 'should' work without canbus - yes ? If so how can I turn on without canbus, when its getting power.
It always turns off fine when I press the button but will never turn on just by the button. Even if car is running.
Answer: Whisper sweet nothings
Really ? ... ?

knob/sound problem

I have a knob/sound problem with my HU (MTCE px5 Android 8 with 3 buttons and a knob) and i strongly believe that is a software issue, as it always happens at 10-20 first minutes, then everything is fine.
I start the HU everything running fine, but NO SOUND, turn knob or steering volume buttons volume bars appear but no sound. If I wait 5-10 minutes usually the sound starts suddenly. Now i ve been to a high level to trick the sound to awake, so find out jumping from app to app may awake faster. The weirdest trick I found is to turn the knob and immediately in the touch screen with my finger to the volume bar left right usually works. When the sound awakens, for some minutes the volume does not smoothly go up or down, but there are big gaps and steps!
Everything starts while the HU has the factory ROM. I 've done factory reset twice, nothing. Now i have installed Malaysk 3.5 (which is great), hoping to solve the issue, but not.
Any idea, maybe knob mapping, or knob resetting or anything else?
Anyone??
Send it back for warranty service? What else have you tried and what does reseller suggest?

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